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More Information: Rhododendron 'Horizon Monarch'


R. 'Horizon Monarch' 
  Photo: Ned Brockenbrough

Predominant Flower Color:  Yellow

Flower/Truss Description:  Flower openly funnel-shaped, 4" across, pale greenish-yellow to light yellow with a small, vivid red flare. Ball-shaped truss holds 15 flowers.

Fragrant:  No

Bloom Time:  Midseason

Foliage Description / Plant Habit:  Leaves elliptic, apiculate apex, cuneate base, 6¾" long, convex, dark green. Spreading growth habit.

Height:  6 feet in 10 years.

Cold Hardiness Temp:  5°F  ( -15°C)

Parentage  (Seed Parent x Pollen Parent): 
     Nancy Evans x Point Defiance

Elepidote (E) or Lepidote (L):  E

Hybridized or Selected by:  Brockenbrough

Registration Reference:  ARS 902

Glossary of plant description terminology.
Note: Bloom time and 10 year height information are approximate and can vary dependent on weather and growing conditions.
Cold hardiness temperature is also an approximate value.


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Ph: 631-533-0375   E-Mail: member@arsoffice.org
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